I love these stuffed shells for their versatility and am submitting them for Presto Pasta Nights over at Ruth's site Once Upon a Feast . She always has a line-up of delicious pasta dishes each week. This dish is open to interpretation and you can substitute various cheeses such as Asiago or feta in place of the Parmesan; and replace the oregano with other dried herbs, such as thyme, basil, or dill.
**Spinach & Ricotta-Stuffed Shells**
2 cups Basic Marinara Sauce, divided (recipe follows)
cooking spray
2-1/2 cups part-skim ricotta cheese
1/2 cup (2 oz) grated fresh Parmesan cheese
1/2 tsp onion powder
1/2 tsp dried oregano
1/4 tsp salt
1/4 tsp freshly ground black pepper
1 (10-oz) package frozen chopped spinach, thawed, drained, and squeezed dry
1 large egg yolk
1 garlic clove, minced
24 cooked jumbo pasta shells (conchiglioni)
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Preheat oven to 350F.
Spread 1/2 cup Basic Marinara over bottom of a 13 x 9-inch baking dish coated with cooking spray.
Combine ricotta and next 8 ingredients (through garlic) in a large bowl, stirring well. Spoon about 1-1/2 T filling into each pasta shell. Arrange stuffed shells in prepared dish; spread with remaining 1-1/2 cups Basic Marinara. Cover and bake at 350F for 30 minutes. Let stand 5 minutes before serving.
Serves 6
Basic Marinara
3 T olive oil
3 cups chopped yellow onion (about 3 medium)
1 T sugar
3 T minced garlic (about 6 cloves)
2 tsp salt
2 tsp dried basil
1-1/2 tsp dried oregano
1 tsp dried thyme
1 tsp freshly ground black pepper
1/2 tsp fennel seeds, crushed
2 T balsamic vinegar
2 cups fat-free, less sodium chicken broth
3 (28 oz) cans no salt added crushed tomatoes
Heat oil in a large Dutch oven over medium heat. Add onion to pan; cook 4 minutes, stirring frequently. Add sugar and next 7 ingredients (through fennel seeds); cook 1 minute, stirring constantly. Stir in vinegar; cook 30 seconds. Add broth and tomatoes; bring to a simmer. Cook over low heat for 55 minutes or until sauce thickens, stirring occasionally.
Yields about 12 cups (serving size is 1/2 cup)
This sauce makes enough for several recipes so freeze the remainder. Long stints in the refrigerator can dull the taste of tomatoes. To perk up thawed sauce; add 1/2 tsp finely grated lemon rind or 1 tsp balsamic vinegar while reheating.